APA (7 वां संस्करण) प्रशस्ति पत्र
Campbell, D. P. (1999). The complete inklings: Columns on leadership and creativity. Center for Creative Leadership.
शिकागो शैली (17वां संस्करण) प्रशस्ति पत्र
Campbell, David P. The Complete Inklings: Columns on Leadership and Creativity. Greensboro, N.C.: Center for Creative Leadership, 1999.
एमएलए (9वां संस्करण) प्रशस्ति पत्र
Campbell, David P. The Complete Inklings: Columns on Leadership and Creativity. Center for Creative Leadership, 1999.
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